CN102377002A - Radio-frequency filter in mixed mode - Google Patents
Radio-frequency filter in mixed mode Download PDFInfo
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- CN102377002A CN102377002A CN2010102628464A CN201010262846A CN102377002A CN 102377002 A CN102377002 A CN 102377002A CN 2010102628464 A CN2010102628464 A CN 2010102628464A CN 201010262846 A CN201010262846 A CN 201010262846A CN 102377002 A CN102377002 A CN 102377002A
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- radio
- frequency filter
- dielectric resonance
- resonant rod
- metallic cavity
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Abstract
The invention is suitable for the field of a filter and provides a radio-frequency filter and a duplexer. Two resonance modes are mixed in the radio-frequency filter, thereby greatly reducing the size of the filter, lowering the manufacturing cost of the filter and still acquiring higher electrical property and ultrahigh power capacity.
Description
Technical field
The present invention relates to a kind of radio-frequency filter.
Background technology
Radio-frequency filter mainly strobes in wireless telecommunications, extracts needed signal.Modal in the market filter has two kinds; A kind of is the cavity body filter that is made up of the metal coaxial resonant cavity, this filter by metallic cavity with place inner metal resonant rod to constitute, it is little to be characterized in inserting loss; Band is outer to suppress high; Power capacity is big, but its volume is bigger, and manufacturing cost is than higher.Another kind is on ceramic dielectric, to etch the dielectric filter that certain metal pattern forms; The maximum characteristics of this filter are exactly that volume is little, and cost is low, but the electrical performance indexes of this filter is generally all poor; And power capacity is less, and maximum power capabilities is 20W on the market at present.Therefore develop that a kind of volume is little, cost is low and electrical performance indexes radio-frequency filter high, that power capacity is big is significant.
Summary of the invention
The purpose of this invention is to provide the mixing mould radio-frequency filter that a kind of volume is little, cost is low, electrical performance indexes is high, power capacity is big
For achieving the above object, the present invention provides a kind of radio-frequency filter, and it is made up of metallic cavity, metal resonant rod and dielectric resonance; Lower bottom part links to each other in metal resonant rod bottom and the metallic cavity; Form a TEM mould resonance, metal material on the upper and lower surfaces coated of dielectric resonance links to each other dielectric resonance again with metal resonant rod top; The another side of dielectric resonance links to each other with the metallic cavity internal upper part, forms a TM mould resonance.
After adopting such scheme, through mixing two kinds of modes of resonance, thereby dwindle the volume of filter greatly, reduced the manufacturing cost of filter, but still can obtain higher electrical property and power capacity greatly.
The embodiment of the invention also provides a kind of duplexer that is made up of radio-frequency filter recited above
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer; Below in conjunction with accompanying drawing and embodiment; The present invention is further elaborated; Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
See also Fig. 1, invent the embodiment radio-frequency filter that provides for this reason, this filter comprises:
Two side covers are fixed on through side cover trip bolt 107 and form an airtight container on the metallic cavity 101.
Signal is imported, is exported through input, out connector 108.
Tuning plug 106 through tuning metallic cavity 101 tops can be adjusted the performance of radio-frequency filter.
The said radio-frequency filter of patent of the present invention can be through changing the thickness of metal resonant rod and dielectric resonance; Under the constant situation of metallic cavity height, realize the frequency adjustment of very big scope; Thereby the maximized versatility that realizes the radio-frequency filter cavity has reduced the manufacturing cost of radio-frequency filter cavity greatly.Because between metal resonant rod and metallic cavity top, added dielectric resonance, thereby improved the power capacity of filter greatly.
The embodiment of the invention also provides a kind of duplexer that comprises the radio-frequency filter structure that the embodiment of the invention provides
By on can know that the radio-frequency filter volume that the embodiment of the invention provides is little, cost is low, electrical property is high, power capacity is big, has satisfied the requirement of device miniaturization, the structural design that is very easy to integral device with produce debugging.
It is used that present embodiment is merely explanation the present invention, not in order to restriction the present invention, all in the present invention spirit and principle institute change, be equal to and replace and improvement etc., all should be included within protection scope of the present invention
Description of drawings
Fig. 1 is the structural representation of radio-frequency filter embodiment of the present invention.
Claims (7)
1. the present invention provides a kind of radio-frequency filter; It is characterized in that: it is made up of metallic cavity, metal resonant rod and dielectric resonance, and lower bottom part links to each other in metal resonant rod bottom and the metallic cavity, forms a TEM mould resonance; Metal material on the upper and lower surfaces coated of dielectric resonance; Dielectric resonance is linked to each other with metal resonant rod top, the another side of dielectric resonance links to each other with the metallic cavity internal upper part, forms a TM mould resonance again.
2. radio-frequency filter as claimed in claim 1 is characterized in that, the two ends of said dielectric resonance scribble metal material.
3. radio-frequency filter as claimed in claim 1 is characterized in that, said metallic cavity, metal resonant rod and dielectric resonance compress through the bolt from the metallic cavity bottom.
4. radio-frequency filter as claimed in claim 3 is characterized in that, said screw passes metallic cavity bottom squeeze metal resonant rod and dielectric resonance, and it is closely linked to each other each other.
5. radio-frequency filter as claimed in claim 1 is characterized in that, said metal resonant rod and dielectric resonance all are positioned at metallic cavity inside.
6. radio-frequency filter as claimed in claim 5 is characterized in that, said metal resonant rod and dielectric resonance are with one heart.
7. a duplexer is characterized in that, said duplexer comprises right 1 to 6 each described radio-frequency filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102628464A CN102377002A (en) | 2010-08-19 | 2010-08-19 | Radio-frequency filter in mixed mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102628464A CN102377002A (en) | 2010-08-19 | 2010-08-19 | Radio-frequency filter in mixed mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102377002A true CN102377002A (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102628464A Pending CN102377002A (en) | 2010-08-19 | 2010-08-19 | Radio-frequency filter in mixed mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102377002A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107392A (en) * | 2013-02-07 | 2013-05-15 | 江苏贝孚德通讯科技股份有限公司 | Mixed-mode radio frequency/microwave band elimination filter |
| CN103165969A (en) * | 2012-11-20 | 2013-06-19 | 深圳光启创新技术有限公司 | Harmonic oscillator, resonant cavity, wave filter component and electromagnetic wave equipment |
| US9042847B2 (en) | 2012-11-08 | 2015-05-26 | Hauwei Technologies Co., Ltd. | Filter, receiver, transmitter and transceiver |
| WO2018119825A1 (en) * | 2016-12-29 | 2018-07-05 | 深圳市大富科技股份有限公司 | Tem mode filter and communication device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020118080A1 (en) * | 2001-02-28 | 2002-08-29 | Murata Manufacturing Co., Ltd. | Filter apparatus, duplexer, and communication apparatus |
| JP2005159597A (en) * | 2003-11-25 | 2005-06-16 | Murata Mfg Co Ltd | Resonator apparatus, filter, duplexer, and communication apparatus |
-
2010
- 2010-08-19 CN CN2010102628464A patent/CN102377002A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020118080A1 (en) * | 2001-02-28 | 2002-08-29 | Murata Manufacturing Co., Ltd. | Filter apparatus, duplexer, and communication apparatus |
| JP2005159597A (en) * | 2003-11-25 | 2005-06-16 | Murata Mfg Co Ltd | Resonator apparatus, filter, duplexer, and communication apparatus |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9042847B2 (en) | 2012-11-08 | 2015-05-26 | Hauwei Technologies Co., Ltd. | Filter, receiver, transmitter and transceiver |
| CN103165969A (en) * | 2012-11-20 | 2013-06-19 | 深圳光启创新技术有限公司 | Harmonic oscillator, resonant cavity, wave filter component and electromagnetic wave equipment |
| CN103165969B (en) * | 2012-11-20 | 2014-04-16 | 深圳光启创新技术有限公司 | Harmonic oscillator, resonant cavity, wave filter component and electromagnetic wave equipment |
| CN103107392A (en) * | 2013-02-07 | 2013-05-15 | 江苏贝孚德通讯科技股份有限公司 | Mixed-mode radio frequency/microwave band elimination filter |
| WO2018119825A1 (en) * | 2016-12-29 | 2018-07-05 | 深圳市大富科技股份有限公司 | Tem mode filter and communication device |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120314 |